To pack a set of books, Surbhi made a carton that was 48 inches long, 27 inches wide and 30 inches tall. What will be the total surface area (in square feet) of this carton, once it closed from all sides? [Use 1 foot = 12 inches]
49.25
The correct answer is 49.25.
However, the question specifically asks only for the surface area. Unit conversion is a crucial skill in such problems. Always pay attention to the units given and the units required for the final answer. Remember that area conversions involve squaring the linear conversion factor.
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